The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2006
Filed:
Feb. 28, 2005
Randall S. Jackson, Burlington, WI (US);
Richard R. Clanton, Menomonee Falls, WI (US);
Joseph L. Pfaff, Wauwatosa, WI (US);
Randall S. Jackson, Burlington, WI (US);
Richard R. Clanton, Menomonee Falls, WI (US);
Joseph L. Pfaff, Wauwatosa, WI (US);
HUSCO International, Inc., Waukesha, WI (US);
Abstract
An apparatus is provided which has sensors that detect pressure on opposite sides of a control valve which controls the flow of hydraulic fluid from a source to a hydraulic actuator. The sensors produce electrical signals indicating those pressures. In response to the sensor signals, a controller produces an output signal the operates a proportional control valve to thereby regulate pressure at a node of the hydraulic circuit. Several mechanisms are described that react to the pressure at the node by varying the pressure of the fluid being supplied to the main valve so that a controlled pressure level is achieved.